How does radiometric dating work Chat with awman no e mail

The most direct means for calculating the Earth's age is a Pb/Pb isochron age, derived from samples of the Earth and meteorites.

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Over time, the amounts of Pb-206 and Pb-207 will change in some samples, as these isotopes are decay end-products of uranium decay (U-238 decays to Pb-206, and U-235 decays to Pb-207).

This causes the data points to separate from each other.

he generally accepted age for the Earth and the rest of the solar system is about 4.55 billion years (plus or minus about 1%).

This value is derived from several different lines of evidence.

The use of 14C in meteorite dating is solely based on its production by cosmic rays (and for terrestrial samples, with its production in the atmosphere).

26Al and some other nuclides not mentioned are also used in this way.

These ions are accelerated in an electric field through collimating slits and subject to a magnetic field which causes the ions to follow a curved path. By adjustment of the strength of the magnetic field and suitable placement of an ion collector, the different isotopes can be measured with precision.

There are some things that affect these measurements.

Unfortunately, the age cannot be computed directly from material that is solely from the Earth.

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